scholarly journals Nonlinear strain wave localization in periodic composites

2012 ◽  
Vol 49 (23-24) ◽  
pp. 3381-3387 ◽  
Author(s):  
A.V. Porubov ◽  
I.V. Andrianov ◽  
V.V. Danishevs’kyy
Keyword(s):  
Wave Localization ◽  
Strain Wave ◽  
Nonlinear Strain ◽  
Periodic Composites

scholarly journals Direct method for solving nonlinear strain wave equation in microstructure solids

2016 ◽  
Vol 11 (10) ◽  
pp. 121-131 ◽  
Author(s):  
A Gepreel Khaled ◽  
A Nofal Taher ◽  
S Al Sayali Nehal
Keyword(s):  
Wave Equation ◽  
Direct Method ◽  
Strain Wave ◽  
Nonlinear Strain

scholarly journals Hyperuniformity and wave localization in pinwheel scattering arrays

2021 ◽  
Vol 103 (22) ◽  
Author(s):  
F. Sgrignuoli ◽  
L. Dal Negro
Keyword(s):  
Wave Localization

On a Gearing Problem in Conventional Harmonic Drives With Involute Toothed Gear Set

2011 ◽  
Author(s):  
Bikash Routh ◽  
Rathindranath Maiti
Keyword(s):  
Applied Load ◽  
Harmonic Drive ◽  
Strain Wave ◽  
Base Circle ◽  
Pitch Curve

Circular pitches of flex spline teeth of a ‘Strain Wave Gearing’, also known as a ‘Harmonic Drive’, are deformed when the Strain Wave Generating Cam is inserted into the flex spline cup. In the present work the deformed pitch distances considering that flex spline teeth remain rigid while the rim deforms, are estimated. No applied load is considered. It is also shown that if the cam is elliptical then the pitch curve is not an ellipse and vice versa. Geometries of such curves can be defined following the analysis presented in this paper. Cases of both undeformed flex spline with circular spline and deformed flex spline with circular spline, with involute teeth, are considered to find out tooth positions. Geometries of involute teeth profiles in mesh are examined and compared considering oval shaped (on deformation) base drum of flex spline where as base circle of circular spline remained circular.

Evidence of secondary tooth contact in harmonic drive, with involute toothed gear pair, through experimental and finite element analyses of stresses in flex-gear cup

2016 ◽  
Vol 232 (2) ◽  
pp. 341-357 ◽  
Author(s):  
Vineet Sahoo ◽  
Rathindranath Maiti
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Major Axis ◽  
Initial Stresses ◽  
Gear Pair ◽  
Ring Gear ◽  
Harmonic Drive ◽  
Strain Wave ◽  
Element Analysis ◽  
Full Load

Stresses in flex spline/gear cup in harmonic drives with involute toothed gear pair and conventional strain wave generating cam are analyzed using finite element method in ANSYS® environment and experiments. The most innovative part of this investigation is establishing the evidence of secondary contacts and probable load shared by those contacts experimentally over the finite element analysis. Aiming at the performance improvement of gearing in harmonic drives, with involute toothed gear pair, the investigations are carried out through the following analyses. (a) Initial stresses in flex gear cup due to cam insertion only. (b) Stresses in flex gear cup at no load in fully assembled harmonic drive components i.e. flex gear, ring gear, and strain wave generating cam. (c) Stresses in flex gear cup at full load passing through the two pitch points, i.e. the intersection points of ring gear pitch circle, flex gear pitch curve, and major axis on both sides. Finally, (d) stresses in flex gear cup at full load distributed over all possible primary and secondary contacts, in proportion to their contact intensities. Recorded strains of the flex-gear cup while the cam being rotated showed very good agreement with the results obtained by finite element analysis with proper modeling of loading.

Transverse plasma-wave localization in multiple dimensions

2011 ◽  
Vol 83 (4) ◽  
Author(s):  
J. E. Fahlen ◽  
B. J. Winjum ◽  
T. Grismayer ◽  
W. B. Mori
Keyword(s):  
Plasma Wave ◽  
Wave Localization ◽  
Multiple Dimensions

Spin-wave localization between nearest and next-nearest neighboring holes in an antidot lattice

2008 ◽  
Vol 93 (12) ◽  
pp. 122501 ◽  
Author(s):  
S. Neusser ◽  
B. Botters ◽  
M. Becherer ◽  
D. Schmitt-Landsiedel ◽  
D. Grundler
Keyword(s):  
Spin Wave ◽  
Wave Localization
Sign in / Sign up

Export Citation Format

Share Document